Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
December is characterized by a mild reduction in the average high-temperature, from a fresh 55°F (12.8°C) in November to a chilly 46.2°F (7.9°C). During December nights, Rochester witnesses a consistent average temperature of 34.3°F (1.3°C).Humidity
The months with the highest humidity are February, March, May and December, with an average relative humidity of 79%.Rainfall
In Rochester, in December, during 11.1 rainfall days, 2.32" (59mm) of precipitation is typically accumulated. Throughout the year, there are 162.2 rainfall days, and 29.88" (759mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, October through December. In Rochester, in December, snow falls for 2.1 days, with typically accumulated 0.16" (4mm) of snow. Throughout the year, there are 11.9 snowfall days, and 2.99" (76mm) of snow is accumulated.Daylight
With an average of 9h and 42min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 6:43 am and sunset at 4:30 pm. On the last day of December, sunrise is at 7:01 am and sunset at 4:40 pm CST.
Sunshine
In December, the average sunshine is 4.7h.UV index
January, February and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for average individuals.Note: In December, the average maximum UV index of 2 translates into the following recommendations:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Take into account! The reflection from snow can nearly double the Sun's UV radiation intensity.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in December?
What is the most humid month?
What is the average humidity in December?
How many days does it rain in December?
How much does it snow in Rochester in December?
What is the month with the shortest days?
What is the average length of the day in December?
When are sunrise and sunset in December?
How many hours of sunshine does Rochester have in December?
What is the month with the lowest UV index in Rochester?
How high is the UV index in December?
Average temperature in December
Rochester, KY
- Average high temperature in December: 46.2°F
The warmest month (with the highest average high temperature) is July (86.9°F).
The month with the lowest average high temperature is January (41°F).
- Average low temperature in December: 34.3°F
The month with the highest average low temperature is July (68°F).
The coldest month (with the lowest average low temperature) is January (27.9°F).
Average pressure in December
Rochester, KY
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in December
Rochester, KY
- Average wind speed in December: 7.9mph
The windiest months (with the highest average wind speed) are February and April (8.5mph).
The calmest month (with the lowest average wind speed) is July (5mph).
Average humidity in December
Rochester, KY
- Average humidity in December: 79%
The months with the highest relative humidity are February, March, May and December (79%).
The month with the lowest relative humidity is October (73%).
Average rainfall in December
Rochester, KY
- Average rainfall in December: 2.32"
The wettest month (with the highest rainfall) is April (3.11").
The driest month (with the least rainfall) is September (1.54").
Average rainfall days in December
Rochester, KY
- Average rainfall days in December: 11.1 days
The month with the highest number of rainy days is July (17.7 days).
The month with the least rainy days is November (10.2 days).
Average snowfall in December
Rochester, KY
- Average snowfall in December: 0.16"
The month with the highest snowfall is February (1.42").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Rochester, KY
- Average snowfall days in December: 2.1 days
The month with the highest number of snowfall days is January (3.5 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Rochester, KY
- Average daylight in December: 9h and 4min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in December: 4h and 4min
The months with the most sunshine are June and August (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days in December
Rochester, KY
- Average sunshine days in December: 17 days
The months with the most sunshine days are October and November (18.5 days).
The month with the least sunshine days is May (11.3 days).
Average UV index in December
Rochester, KY
- Average UV index in December: 2
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in December
Rochester, KY
- Average cloud cover in December: 51
The months with the most cloud cover are January and February (Cloud cover 53).
The months with the least cloud cover are June and August (Cloud cover 28).
Average visibility in December
Rochester, KY
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Rochester, Kentucky, USA
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